CN211176865U - White-removing system of small gas boiler - Google Patents
White-removing system of small gas boiler Download PDFInfo
- Publication number
- CN211176865U CN211176865U CN201921012151.3U CN201921012151U CN211176865U CN 211176865 U CN211176865 U CN 211176865U CN 201921012151 U CN201921012151 U CN 201921012151U CN 211176865 U CN211176865 U CN 211176865U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- heat
- flue
- gas
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000003546 flue gas Substances 0.000 claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 23
- 239000003345 natural gas Substances 0.000 claims abstract description 19
- 238000007791 dehumidification Methods 0.000 claims abstract description 10
- 230000002087 whitening effect Effects 0.000 claims abstract description 6
- 239000000779 smoke Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 239000001273 butane Substances 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Chimneys And Flues (AREA)
Abstract
The utility model discloses a white system that disappears of small-size gas boiler, including the natural gas station, through pipeline and pneumatic valve with gas boiler, former flue of natural gas station intercommunication, install gas heater, flue gas dehumidifier and the back flue of whitening on the former flue way footpath. According to the flue gas dehumidification device, the two flue gas heat exchangers are arranged on the path of the original flue gas, and the original flue gas (containing water vapor) is cooled by the circulating water tank, so that on one hand, the circulating water tank can be preheated, on the other hand, the temperature of the flue gas in the original flue gas can be reduced, the dehumidification of the flue gas containing water vapor in the flue gas dehumidifier is facilitated, and the water content of the flue gas is reduced; and then the temperature of the original flue gas is utilized to heat the flue gas with the reduced water content, so that the whitening effect of the discharged flue gas is further improved.
Description
Technical Field
The utility model relates to an environmental protection equipment technical field especially relates to a white system that disappears of small-size gas boiler.
Background
The natural gas station is mainly composed of alkanes, the main component of which is methane, and contains a small amount of ethane, propane and butane, in addition, hydrogen sulfide, carbon dioxide, nitrogen, water vapor and the like, and the gas generated after combustion is mostly CO2And water vapor, with very small amounts of unburned CO, SO2，NOxEtc., and also N contained in the air itself2. The main component of the natural gas station, methane, is combusted in air to produce water and carbon dioxide, and the chemical equation for methane combustion is: CH (CH)4+2O2＝ CO2+2H2O; a natural gas station is a multi-component mixed gas, the main component of which is an alkane, the majority of which is methane, and a small amount of which is ethane, propane and butane, and which generally contains hydrogen sulfide, carbon dioxide, nitrogen and moisture, as well as trace amounts of inert gases such as helium and argon. Under standard conditions, methane to butane exist in a gaseous state, and pentane or more is liquid. Substances which can affect the health of a human respiratory system and are generated in the combustion process of the natural gas station are few, the generated carbon dioxide is only about 40% of that of coal, the generated sulfur dioxide is also few, and the natural gas station generates no waste residue or waste water after combustion, and has the advantages of safe use, high heat value, cleanness and the like compared with energy sources such as coal, petroleum and the like. In order to control the pollution of fire coal to the atmosphere, the state continuously sets a series of policies, and the natural gas station is greatly promoted to be used as fuel to replace coal fuel in the aspects of industrial production and people's life. At present, the consumption of coal is becoming smaller, the consumption of natural gas stations is becoming larger and larger, and the improvement of the quality of the environmental atmosphere is powerfully promoted. However, since the natural gas station is composed of 4 hydrogen atoms and 1 carbon atom, its combustion products contain a large amount of water vapor. The flue gas generated by combustion of the natural gas station with high humidity meets the air with slightly low temperature, and water vapor is immediately generated for condensation, which is expressed that white smoke is emitted from a chimney of the natural gas station boiler. The smoke humidity is very high when the chimney emits white smoke, acid mist is possibly formed, surrounding building equipment is corroded, and damage is brought to a human respiratory system, so that the dehumidification of the smoke is not slow at all. Because the amount of flue gas is very large, if equipment such as a dehumidifier is used for dehumidifying the flue gas, the power consumption is remarkable, and the cost is remarkable, so that the search for a low-cost flue gas dehumidification technology becomes urgent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a white system that disappears of small-size gas boiler solves the problem of gas boiler smoke plume.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a white elimination system of a small gas boiler, which comprises a natural gas station, a gas boiler communicated with the natural gas station through a pipeline and an air valve, an original flue, a flue gas heat exchanger, a flue gas dehumidifier and a white elimination flue, wherein the flue gas heat exchanger, the flue gas dehumidifier and the white elimination flue are arranged on the path of the original flue; the two flue gas heat exchangers are arranged on the original flue path, and are communicated with a circulating water tank through a pipeline, so that the circulating water tank is preheated to obtain preheated feed water, wherein the preheated feed water is communicated with a steam pocket on a gas boiler; and on the upstream of the flue gas heat exchanger which exchanges heat with the circulating water tank, the flue gas heat exchanger exchanges heat with dry flue gas subjected to dehumidification by the flue gas dehumidifier through a pipeline, the dry flue gas is heated and then enters a chimney, and condensed water obtained by dehumidifying by the flue gas dehumidifier is conveyed into the circulating water tank through a conveying pump.
Furthermore, the flue gas heat exchanger is composed of a box body, a partition plate, a heat pipe bundle, a heating section, a high-temperature flue gas inlet/outlet, a heat release section, a low-temperature flue gas inlet/outlet and a water replenishing pipe; the heat pipe bundle with fins placed vertically is divided into an upper part and a lower part by a transverse partition board, the upper part is a heat release section, the lower part is a heating section, the lower part heating section exchanges heat with high-temperature flue gas, the heat release section at the upper part heats the dehumidified low-temperature flue gas to raise the temperature, and a heat transfer medium in the heat pipe is water and is uniformly supplemented with water for all the heat pipes through a water supplementing pipe.
Still further, the flue gas dehumidifier is a vertical finned tube heat exchanger, and structurally comprises a shell, a finned tube bundle, a cold water inlet, a cold water outlet, a condensed water outlet, a flue gas inlet and a flue gas outlet; cold water flows in the fin tubes, the smoke flows outside the fin tubes to reduce the temperature, when the smoke is lower than the dew point, vapor in the smoke is condensed outside the fin tubes, the smoke is dehumidified, and cold water in the fin tubes comes from a heat dissipation tower or underground water.
Compared with the prior art, the utility model discloses a beneficial technological effect: according to the flue gas dehumidification device, the two flue gas heat exchangers are arranged on the path of the original flue gas, and the original flue gas (containing water vapor) is cooled by the circulating water tank, so that on one hand, the circulating water tank can be preheated, on the other hand, the temperature of the flue gas in the original flue gas can be reduced, the dehumidification of the flue gas containing water vapor in the flue gas dehumidifier is facilitated, and the water content of the flue gas is reduced; and then the temperature of the original flue gas is utilized to heat the flue gas with the reduced water content, so that the whitening effect of the discharged flue gas is further improved.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
Fig. 1 is a schematic main body diagram of a whitening system of a small gas boiler according to the present invention.
Description of reference numerals: 1. a natural gas station; 2. a gas boiler; 3. an original flue; 4. a flue gas heat exchanger; 5. a flue gas dehumidifier; 6. removing white in the flue; 7. a chimney; 8. a circulating water tank; 9. Preheating feed water; 10. a steam line; 11. and (4) condensing water.
Detailed Description
As shown in fig. 1, a white light eliminating system of a small gas boiler comprises a natural gas station 1, a gas boiler 2 communicated with the natural gas station 1 through a pipeline and a gas valve, a raw flue 3, a flue gas heat exchanger 4 installed on the path of the raw flue 3, a flue gas dehumidifier 5 and a white-removed flue 6; the two flue gas heat exchangers 4 are respectively arranged on the upstream and downstream of the original flue 3, the flue gas heat exchangers 4 are communicated with a circulating water tank 8 through pipelines, the circulating water tank 8 is conveyed through a circulating water pump, so that the circulating water tank 8 is preheated to obtain preheated feed water 9, the temperature of flue gas entering a flue gas dehumidifier 5 is reduced, the temperature of the feed water is increased by saving energy, and the preheated feed water 9 is communicated with a steam pocket on a gas boiler 2; on the route that is located former flue 3, carry out the heat transfer with circulation tank 8 4 upper reaches of flue gas heat exchanger, flue gas heat exchanger 4 passes through the pipeline with pass through the dry flue gas of 5 dehumidification effects of flue gas dehumidifier carries out the heat transfer, through heating the flue gas, reentrant chimney 7, the comdenstion water that flue gas dehumidifier 5 obtained through the dehumidification is sent into in circulation tank 8 through the delivery pump, carries out recycle through the water that gets off of condensation, specifically still need handle through the mixed bed of anion and cation resin, then directly mends circulation tank 8 to the utilization of water economy resource.
In the embodiment, the flue gas heat exchanger is composed of a box body, a partition plate, a heat pipe bundle, a heating section, a high-temperature flue gas inlet/outlet, a heat release section, a low-temperature flue gas inlet/outlet and a water replenishing pipe; the heat pipe bundle with fins placed vertically is divided into an upper part and a lower part by a transverse partition board, the upper part is a heat release section, the lower part is a heating section, the lower part heating section exchanges heat with high-temperature flue gas, the heat release section at the upper part heats the dehumidified low-temperature flue gas to raise the temperature, and a heat transfer medium in the heat pipe is water and is uniformly supplemented with water for all the heat pipes through a water supplementing pipe. The flue gas dehumidifier is a vertical finned tube heat exchanger and structurally comprises a shell, a finned tube bundle, a cold water inlet, a cold water outlet, a condensed water outlet, a flue gas inlet and a flue gas outlet; cold water flows in the fin tubes, the smoke flows outside the fin tubes to reduce the temperature, when the smoke is lower than the dew point, vapor in the smoke is condensed outside the fin tubes, the smoke is dehumidified, and cold water in the fin tubes comes from a heat dissipation tower or underground water.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above embodiments are only for describing the preferred mode of the invention, and are not intended to limit the scope of the invention, and various modifications and improvements made to the technical solution of the invention by those skilled in the art without departing from the spirit of the invention should fall within the protection scope defined by the claims of the invention.
Claims (3)
1. The utility model provides a white system that disappears of small-size gas boiler which characterized in that: the device comprises a natural gas station (1), a gas boiler (2) communicated with the natural gas station (1) through a pipeline and an air valve, an original flue (3), a flue gas heat exchanger (4) arranged on the path of the original flue (3), a flue gas dehumidifier (5) and a post-whitening flue (6); the two flue gas heat exchangers (4) are installed on the path of the original flue (3), the flue gas heat exchangers (4) are communicated with a circulating water tank (8) through a pipeline, so that the circulating water tank (8) is preheated to obtain preheated water (9), and the preheated water (9) is communicated with a steam pocket on the gas boiler (2); on the path of the original flue (3), the flue gas heat exchanger (4) exchanges heat with the circulating water tank (8) at the upstream, the flue gas heat exchanger (4) exchanges heat with dry flue gas passing through the dehumidification function of the flue gas dehumidifier (5) through a pipeline, the dry flue gas passes through the heating flue gas and then enters the chimney (7), and condensed water obtained by dehumidifying the flue gas dehumidifier (5) is sent into the circulating water tank (8) through a conveying pump.
2. The whitening system of a small gas boiler, according to claim 1, wherein: the flue gas heat exchanger consists of a box body, a partition plate, a heat pipe bundle, a heating section, a high-temperature flue gas inlet and outlet, a heat release section, a low-temperature flue gas inlet and outlet and a water replenishing pipe; the heat pipe bundle with fins placed vertically is divided into an upper part and a lower part by a transverse partition board, the upper part is a heat release section, the lower part is a heating section, the lower part heating section exchanges heat with high-temperature flue gas, the heat release section at the upper part heats the dehumidified low-temperature flue gas to raise the temperature, and a heat transfer medium in the heat pipe is water and is uniformly supplemented with water for all the heat pipes through a water supplementing pipe.
3. The whitening system of a small gas boiler, according to claim 2, wherein: the flue gas dehumidifier is a vertical finned tube heat exchanger and structurally comprises a shell, a finned tube bundle, a cold water inlet, a cold water outlet, a condensed water outlet, a flue gas inlet and a flue gas outlet; cold water flows in the fin tubes, the smoke flows outside the fin tubes to reduce the temperature, when the smoke is lower than the dew point, vapor in the smoke is condensed outside the fin tubes, the smoke is dehumidified, and cold water in the fin tubes comes from a heat dissipation tower or underground water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012151.3U CN211176865U (en) | 2019-07-02 | 2019-07-02 | White-removing system of small gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012151.3U CN211176865U (en) | 2019-07-02 | 2019-07-02 | White-removing system of small gas boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211176865U true CN211176865U (en) | 2020-08-04 |
Family
ID=71797025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921012151.3U Expired - Fee Related CN211176865U (en) | 2019-07-02 | 2019-07-02 | White-removing system of small gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211176865U (en) |
-
2019
- 2019-07-02 CN CN201921012151.3U patent/CN211176865U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 |